Grating



Dec. 26, 1939. w A, BA1-Es 2,184,407

Filed Nov, 20. 1937 2 Sheets-Sheet 1 v v Dees 26, w. A. l GBATING Filed Nov. 2o, 193'!A 2 sheets-sheet 2 Patented Dee. as. iosa dname weiter A. hotels. Joliet, nl.,

or to Beulah Batesf Joliet, Ill.

Application Noveibefzo, i931, seriali'vo.-` 1v5,es5 jzcisims. totisti-)nacre v This invention relates j to' gratings which are used for flooring, 'stair treadsandior many other like purposes. e ,l

The principal object of the invention is to the invention similar in'many remects to the form shown in Fig. 4.

While I have shown the grating, in the drawings, it is only a small .section of considered sui-V understood any size and shape desiredi. and that it may be made 1in large sections and cut to fit as required. The grating 4oi! Figs. 1-3 is composed of main gripping of the cornersli formed by the inter` sect-ingiof the surfaces/8." fil'- person walking diagonally across the grating will have thesole of his shoe gripped by a combinationof these cor- ,5- provide a strong grating construct-,odin sucha 'bars l of generallyrectangular cross-section and 1 manner as to presenta nonskid suriace'thereon. arranged in Parallel l'elatiOIl.l The` main bars Another object is to provide a strong grating are interconnected by secondary bars 5 which are with a surface. thereon which will ell'ectively presecuredl thereto to hold the .main bars in their vent skidding or -slipping of a person walking `parallel relation. The secondarybars are pref- 1g thereupon inanyf direction. erably of a substantially hexagonal cross-section '10 A further Objectis to provide a, grating havand contain much less material per unit of length ing secondary bars arrangedfin discontinuous as'compared to the'main bars. The secondary rows for the better admission of light therebars are relatively short in length and preferathrougnwithoutmateiiallyiessening the strength bly extend'aoross the space, between adjacent ofthe grating. I i I main bars comprisingapair and beyond the 15 A 4still .fiir t he1 ',ii'ije'ct ofy lthe invention to 'malnbars of the pairv to'n'ear'the An iiddle of the provide a strong grating having a. non-skidl surspacesvbetween the adjacent pairs of main bars. face in ali directions which'canbe easily made The secondary bars' are relatively short. as deand assembled iwith the parts thereof permavscribed heretofoltlranda plurality 0f SeCOndal'y nently securedto'gethex-.f bars are arranged in parallel rows 6 in aligned 20 'otherrobjects to provide a grating wherein relation transversely of the grating- ,with the ends transverse foi-cesA applied thereto will be aio:v 1 Yof each secondary bar spaced from the adiasorbed by the main barsextending longitudinalcent ends of the next aligned secondary bars. 1y of the grating, to .provide a grating with com` The ends 'i oi yeacli secondary bar vare arranged paratlvely small openings to effectively prevent at right angles to they surfaces 8 thereof pro- '25 the dropping of articles therethrough but with "'Viding a Sharp COIIlel/thelebetween.

comparatively fewinteroonnectingmembers be- As statedfheretofora the Secondary bars are tween the parts thereof to permit. a maximum vpreferably of hexagonal cross-section. The secpassageof light through the grating, and to proondary bars are secured yto the main bars by vide a 'flexible grating thatwill give slightly l'electrical Welding at. 9 so that a corner formed so when an unusually heavy -load is placed thereon by a -pair v.oi/t adjacent surfaces is v n the top of but which will not. take n .permanent set due to the secondary baror on the top urface of the the lackof continuity oithe secondarybars. grating. The secondary bars in adjacent rows In the accompanying drawings illustrating sethereof are arranged in staggered relation so' lected embodiments of the invention: that the spaces between the secondary bars in a5. Fig. 1 is a. plan view of a sectionoi grating a row are not aligned with the spaces between embodying the invention;4 1 the secondary bars in van adjacent row whereby c, Fig. 2 is an end view of the. section of gratingA the secondary bars of one row secure the main shown in Fig. 1; bars of a pain togetherfjwhile the secondary bars 40 Fig. 3 is a sectional view taken on the line Ao! an adjacent row securethe pais of main bars o s-sofria 1; v together. 1.

Fig. 4 is e pien viewof a section of grating f This form of my invention provides a grating embodying another form of the invention; which `will present a non-skid surface to the sole Flg. .5 is 4an end vlew oi' the section of grating of the shoe of a personV walkingthereupon in a shown in Fig 4; f transverse direction by reason o i'the grippingof 45 Figf is a' sectional view taken` on the line 'Y the corners l0 'of the main bars and the corners 8-6 o1' Fig. 4; formed by the surfaces 8 and ends 1 of the sec- Flg. 'l is a detail sectional view taken on the ondary bars- Il' .further 'Provides a non-skid une 1 1 of F1g 4; 3m1-- surface to the sole of the shoe oi a person walk-' so Fig. 8 is a'detsii pian vieworanother form of ingthereon in a longitudinal direction by the A iicient to explain theinvention, but itv will be ners. It will also be noted that due to the spac- 5g ing between the ends of adjacent secondary bars in each row more light is permitted to pass .through the grating than would be true if the secondary bars were continuous across the grating. This feature is especially important where a working space is provided below the grating or adjacent to the space below tho grating which depends solely or largely for light'from a source above the grating.

In the form of the invention shown in Figs. 4-7 the secondary bars 5 are arranged to extend in a diagonal direction in rows across the grating and the secondary bars of one row which extend upwardly to the right in Fig. s may be integral with or welded at their ends to the ends of the secondary bars inV the adjacent rows wherein the secondary bars extend upwardly to the left' in Pig. 4.' The ends of the secondary bars in adjacent rows may alsobe spaced as in Fig. 8. The secondary bars of this form of the invention are also"pre ferably made of material having an hexagonal cross-section with the corners il constituting the tread surface of the grating. The particular cross-sectional shape of the second- `"ary bars is relatively unimportant however as 4 long as a corner similar to the corner il is prov vided. The corners li on the secondary bars f tween the ends Ain' adjacent rows in this torni of the invention `extend atan angle to each other and therefore perform' the same function as the corners be- `'L and thesurfaces 8 in the form .of`l i8$. 1.3.'

ondary the main bars of pairs-together while the intermediate secondary bars secure the adjacent pairs of main bars together. is obvious that a'foree applied transversely at any -point in both forms 'of gratins .will'be transmitted through the main bars and second- In 'me embodiment-or Figs. v alternate sec- 'Ihe main bars and secondary bars may be made' of any material and of any strength and of any size and of a variety of shapes and any number of them may be used, as described, and

while I have shown the invention in selected embodiments which I consider desirable for, commercial use I do not thereby intend to restrict the invention speciically thereto and reserve the right to make any changes in the form, construction and arrangement of parts as may be vnecessary or desirable to satisfy diiferent condi- -tionswithin the scope of the following claims.

I claim: v

l. A grating comprising a plurality of pairs of spaced relatively wide main bars. said pairs of main bars being arranged in spaced relation, a plurality of rows of spaced hexagonal secondary bars arranged substantially transversely of the main bars and being alternately staggered and in alignment with each other and projecting beyond the outer sides of the pairs of main bars to provide open spaces between said pairs of main bars and also projecting beyond the inner-sides of' each of the main bars thereby providing open spaces between each of the bars of the said pairs of main bars, and the secondary bars being disposed in said main bars to present corners thereof thatare substantially ilush with the top surface of the main bars.

2. A grating comprising a plurality oi pairs of spaced relatively wide main bars, said pairs of main bars being arranged in spaced relation, a

. plurality of rows of spaced secondary bars arranged `substantially transversely of, and held in substantially the same plane as, the main bars and being alternately staggered and in alignment with each other and projecting beyond the outer sides of the pairs of main bars to provide open spaces between said pairs of main hars and also projecting beyond the inner sides of each of the main bars thereby providing open spaces betweeneach of the bars of said pairs of main bars.

" WALTERAA. BATES. 

